<template>
  <div
    id="main8"
    class="main"
  />
</template>

<script>
export default {
  mounted () {
    this.echartsFn()
  },
  methods: {
    echartsFn () {
      var chartDom = document.getElementById('main8')
      var myChart = this.$echarts.init(chartDom)
      var option

      let angle = 0 // 角度，用来做简单的动画效果的
      const value = 55.33
      option = {
        backgroundColor: '#061740',
        title: {
          text: '{a|' + value + '}{c|%}',
          x: 'center',
          y: 'center',
          textStyle: {
            rich: {
              a: {
                fontSize: 48,
                color: '#29EEF3'
              },

              c: {
                fontSize: 20,
                color: '#ffffff'
                // padding: [5,0]
              }
            }
          }
        },
        // legend: {
        //   type: 'plain',
        //   orient: 'vertical',
        //   right: 0,
        //   top: '10%',
        //   align: 'auto',
        //   data: [
        //     {
        //       name: '涨价后没吃过',
        //       icon: 'circle'
        //     },
        //     {
        //       name: '天天吃',
        //       icon: 'circle'
        //     },
        //     {
        //       name: '三五天吃一次',
        //       icon: 'circle'
        //     },
        //     {
        //       name: '半个月吃一次',
        //       icon: 'circle'
        //     }
        //   ],
        //   textStyle: {
        //     color: 'white',
        //     fontSize: 16,
        //     padding: [10, 1, 10, 0]
        //   },
        //   selectedMode: false
        // },
        series: [
          {
            name: 'ring5',
            type: 'custom',
            coordinateSystem: 'none',
            renderItem: function (params, api) {
              return {
                type: 'arc',
                shape: {
                  cx: api.getWidth() / 2,
                  cy: api.getHeight() / 2,
                  r: (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.6,
                  startAngle: ((0 + angle) * Math.PI) / 180,
                  endAngle: ((90 + angle) * Math.PI) / 180
                },
                style: {
                  stroke: '#0CD3DB',
                  fill: 'transparent',
                  lineWidth: 1.5
                },
                silent: true
              }
            },
            data: [0]
          },
          {
            name: 'ring5',
            type: 'custom',
            coordinateSystem: 'none',
            renderItem: function (params, api) {
              return {
                type: 'arc',
                shape: {
                  cx: api.getWidth() / 2,
                  cy: api.getHeight() / 2,
                  r: (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.6,
                  startAngle: ((180 + angle) * Math.PI) / 180,
                  endAngle: ((270 + angle) * Math.PI) / 180
                },
                style: {
                  stroke: '#0CD3DB',
                  fill: 'transparent',
                  lineWidth: 1.5
                },
                silent: true
              }
            },
            data: [0]
          },
          {
            name: 'ring5',
            type: 'custom',
            coordinateSystem: 'none',
            renderItem: function (params, api) {
              return {
                type: 'arc',
                shape: {
                  cx: api.getWidth() / 2,
                  cy: api.getHeight() / 2,
                  r: (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.65,
                  startAngle: ((270 + -angle) * Math.PI) / 180,
                  endAngle: ((40 + -angle) * Math.PI) / 180
                },
                style: {
                  stroke: '#0CD3DB',
                  fill: 'transparent',
                  lineWidth: 1.5
                },
                silent: true
              }
            },
            data: [0]
          },
          {
            name: 'ring5',
            type: 'custom',
            coordinateSystem: 'none',
            renderItem: function (params, api) {
              return {
                type: 'arc',
                shape: {
                  cx: api.getWidth() / 2,
                  cy: api.getHeight() / 2,
                  r: (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.65,
                  startAngle: ((90 + -angle) * Math.PI) / 180,
                  endAngle: ((220 + -angle) * Math.PI) / 180
                },
                style: {
                  stroke: '#0CD3DB',
                  fill: 'transparent',
                  lineWidth: 1.5
                },
                silent: true
              }
            },
            data: [0]
          },
          {
            name: 'ring5',
            type: 'custom',
            coordinateSystem: 'none',
            renderItem: function (params, api) {
              const x0 = api.getWidth() / 2
              const y0 = api.getHeight() / 2
              const r = (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.65
              const point = getCirlPoint(x0, y0, r, 90 + -angle)
              return {
                type: 'circle',
                shape: {
                  cx: point.x,
                  cy: point.y,
                  r: 4
                },
                style: {
                  stroke: '#0CD3DB', // 粉
                  fill: '#0CD3DB'
                },
                silent: true
              }
            },
            data: [0]
          },
          {
            name: 'ring5', // 绿点
            type: 'custom',
            coordinateSystem: 'none',
            renderItem: function (params, api) {
              const x0 = api.getWidth() / 2
              const y0 = api.getHeight() / 2
              const r = (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.65
              const point = getCirlPoint(x0, y0, r, 270 + -angle)
              return {
                type: 'circle',
                shape: {
                  cx: point.x,
                  cy: point.y,
                  r: 4
                },
                style: {
                  stroke: '#0CD3DB', // 绿
                  fill: '#0CD3DB'
                },
                silent: true
              }
            },
            data: [0]
          },
          {
            name: '吃猪肉频率',
            type: 'pie',
            radius: ['58%', '45%'],
            silent: true,
            clockwise: true,
            startAngle: 90,
            z: 0,
            zlevel: 0,
            label: {
              normal: {
                position: 'center'
              }
            },
            data: [
              {
                value: value,
                name: '',
                itemStyle: {
                  normal: {
                    color: {
                      // 完成的圆环的颜色
                      colorStops: [
                        {
                          offset: 0,
                          color: '#4FADFD' // 0% 处的颜色
                        },
                        {
                          offset: 1,
                          color: '#28E8FA' // 100% 处的颜色
                        }
                      ]
                    }
                  }
                }
              },
              {
                value: 100 - value,
                name: '',
                label: {
                  normal: {
                    show: false
                  }
                },
                itemStyle: {
                  normal: {
                    color: '#173164'
                  }
                }
              }
            ]
          },

          {
            name: '',
            type: 'gauge',
            radius: '70%', // 调整分割线
            center: ['50%', '50%'],
            startAngle: 0,
            endAngle: 359.9,
            splitNumber: 8,
            hoverAnimation: true,
            axisTick: {
              show: false
            },
            splitLine: {
              length: 60,
              lineStyle: {
                width: 4,
                color: '#061740'
              }
            },
            axisLabel: {
              show: false
            },
            pointer: {
              show: false
            },
            axisLine: {
              lineStyle: {
                opacity: 0
              }
            },
            detail: {
              show: false
            },
            data: [
              {
                value: 0,
                name: ''
              }
            ]
          }
        ]
      }

      // 获取圆上面某点的坐标(x0,y0表示坐标，r半径，angle角度)
      function getCirlPoint (x0, y0, r, angle) {
        const x1 = x0 + r * Math.cos((angle * Math.PI) / 180)
        const y1 = y0 + r * Math.sin((angle * Math.PI) / 180)
        return {
          x: x1,
          y: y1
        }
      }

      function draw () {
        angle = angle + 3
        myChart.setOption(option, true)
        // window.requestAnimationFrame(draw);
      }
      var timerId
      if (timerId) {
        clearInterval(timerId)
      }
      timerId = setInterval(function () {
        // 用setInterval做动画感觉有问题
        draw()
      }, 100)

      option && myChart.setOption(option)
    }
  }
}
</script>

<style>

</style>
